Some people only consider French kissing as getting to first base. Second base is direct physical contact, usually meaning his hands to her breast. It also includes other forms of petting, touching and groping. Third base may include manual or oral sex for either partner.

What does 3rd base refer to?

Third base (recorded in the 1940s) involves sexual contact below the waist. A home run is intercourse. The sexual “base system” has historically been spoken of in terms of how far a young man got with a girl.